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CVE-2019-5462 : Vulnerability Insights and Analysis

Learn about CVE-2019-5462 affecting GitLab Community Edition and GitLab Enterprise Edition versions 9.0 and above. Find out how to mitigate this privilege escalation vulnerability.

An exploit has been found in GitLab Community Edition and GitLab Enterprise Edition versions 9.0 and above, leading to a privilege escalation vulnerability.

Understanding CVE-2019-5462

This CVE identifies a privilege escalation issue in GitLab CE/EE versions 9.0 and later due to trigger tokens not being updated when ownership is transferred.

What is CVE-2019-5462?

This CVE pertains to a vulnerability in GitLab CE/EE versions 9.0 and above, where trigger tokens are not rotated upon ownership change, potentially allowing privilege escalation.

The Impact of CVE-2019-5462

The vulnerability could be exploited by attackers to escalate their privileges within affected GitLab instances, potentially leading to unauthorized access and control.

Technical Details of CVE-2019-5462

This section delves into the technical aspects of the CVE.

Vulnerability Description

The issue arises from trigger tokens not being updated upon ownership transfer, creating a loophole for privilege escalation attacks.

Affected Systems and Versions

        Product: GitLab Community Edition and GitLab Enterprise Edition
        Versions Affected: Affects GitLab CE/EE 9.0 and later
        Fixed Versions: Resolved in 12.1.2, 12.0.4, and 11.11.6

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the unchanged trigger tokens to elevate their privileges within the GitLab platform.

Mitigation and Prevention

Protecting systems from CVE-2019-5462 requires immediate actions and long-term security measures.

Immediate Steps to Take

        Update GitLab CE/EE to the fixed versions (12.1.2, 12.0.4, or 11.11.6) to mitigate the vulnerability.
        Monitor and restrict access to sensitive areas within GitLab to prevent unauthorized privilege escalation.

Long-Term Security Practices

        Regularly review and update access control policies and token management procedures.
        Conduct security training for users to raise awareness about privilege escalation risks.

Patching and Updates

        Stay informed about security releases and promptly apply patches provided by GitLab to address known vulnerabilities.

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